1CFG_CRYPTO ?= y 2# Select small code size in the crypto library if applicable (for instance 3# LibTomCrypt has -DLTC_SMALL_CODE) 4# Note: the compiler flag -Os is not set here but by CFG_CC_OPTIMIZE_FOR_SIZE 5CFG_CRYPTO_SIZE_OPTIMIZATION ?= y 6 7ifeq (y,$(CFG_CRYPTO)) 8 9# Ciphers 10CFG_CRYPTO_AES ?= y 11CFG_CRYPTO_DES ?= y 12CFG_CRYPTO_SM4 ?= y 13 14# Cipher block modes 15CFG_CRYPTO_ECB ?= y 16CFG_CRYPTO_CBC ?= y 17CFG_CRYPTO_CTR ?= y 18CFG_CRYPTO_CTS ?= y 19CFG_CRYPTO_XTS ?= y 20 21# Message authentication codes 22CFG_CRYPTO_HMAC ?= y 23CFG_CRYPTO_CMAC ?= y 24CFG_CRYPTO_CBC_MAC ?= y 25 26# Hashes 27CFG_CRYPTO_MD5 ?= y 28CFG_CRYPTO_SHA1 ?= y 29CFG_CRYPTO_SHA224 ?= y 30CFG_CRYPTO_SHA256 ?= y 31CFG_CRYPTO_SHA384 ?= y 32CFG_CRYPTO_SHA512 ?= y 33CFG_CRYPTO_SHA512_256 ?= y 34CFG_CRYPTO_SM3 ?= y 35 36# Asymmetric ciphers 37CFG_CRYPTO_DSA ?= y 38CFG_CRYPTO_RSA ?= y 39CFG_CRYPTO_DH ?= y 40# ECC includes ECDSA and ECDH 41CFG_CRYPTO_ECC ?= y 42ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt) 43CFG_CRYPTO_SM2_PKE ?= y 44CFG_CRYPTO_SM2_DSA ?= y 45CFG_CRYPTO_SM2_KEP ?= y 46endif 47ifeq ($(CFG_CRYPTOLIB_NAME)-$(CFG_CRYPTO_SM2_PKE),mbedtls-y) 48$(error Error: CFG_CRYPTO_SM2_PKE=y requires CFG_CRYPTOLIB_NAME=tomcrypt) 49endif 50ifeq ($(CFG_CRYPTOLIB_NAME)-$(CFG_CRYPTO_SM2_DSA),mbedtls-y) 51$(error Error: CFG_CRYPTO_SM2_DSA=y requires CFG_CRYPTOLIB_NAME=tomcrypt) 52endif 53ifeq ($(CFG_CRYPTOLIB_NAME)-$(CFG_CRYPTO_SM2_KEP),mbedtls-y) 54$(error Error: CFG_CRYPTO_SM2_KEP=y requires CFG_CRYPTOLIB_NAME=tomcrypt) 55endif 56 57# Authenticated encryption 58CFG_CRYPTO_CCM ?= y 59CFG_CRYPTO_GCM ?= y 60# Default uses the OP-TEE internal AES-GCM implementation 61CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB ?= n 62 63endif 64 65ifeq ($(CFG_WITH_PAGER),y) 66ifneq ($(CFG_CRYPTO_SHA256),y) 67$(warning Warning: Enabling CFG_CRYPTO_SHA256 [required by CFG_WITH_PAGER]) 68CFG_CRYPTO_SHA256:=y 69endif 70endif 71 72$(eval $(call cryp-enable-all-depends,CFG_WITH_SOFTWARE_PRNG, AES ECB SHA256)) 73 74ifeq ($(CFG_CRYPTO_WITH_CE),y) 75 76$(call force,CFG_AES_GCM_TABLE_BASED,n,conflicts with CFG_CRYPTO_WITH_CE) 77 78# CFG_HWSUPP_PMULT_64 defines whether the CPU supports polynomial multiplies 79# of 64-bit values (Aarch64: PMULL/PMULL2 with the 1Q specifier; Aarch32: 80# VMULL.P64). These operations are part of the Cryptographic Extensions, so 81# assume they are implicitly contained in CFG_CRYPTO_WITH_CE=y. 82CFG_HWSUPP_PMULT_64 ?= y 83 84ifeq ($(CFG_ARM32_core),y) 85CFG_CRYPTO_SHA1_ARM32_CE ?= $(CFG_CRYPTO_SHA1) 86CFG_CRYPTO_SHA256_ARM32_CE ?= $(CFG_CRYPTO_SHA256) 87endif 88 89ifeq ($(CFG_ARM64_core),y) 90CFG_CRYPTO_SHA1_ARM64_CE ?= $(CFG_CRYPTO_SHA1) 91CFG_CRYPTO_SHA256_ARM64_CE ?= $(CFG_CRYPTO_SHA256) 92endif 93 94CFG_CRYPTO_AES_ARM_CE ?= $(CFG_CRYPTO_AES) 95CFG_CORE_CRYPTO_AES_ACCEL ?= $(CFG_CRYPTO_AES_ARM_CE) 96 97else #CFG_CRYPTO_WITH_CE 98 99CFG_AES_GCM_TABLE_BASED ?= y 100 101endif #!CFG_CRYPTO_WITH_CE 102 103 104# Cryptographic extensions can only be used safely when OP-TEE knows how to 105# preserve the VFP context 106ifeq ($(CFG_CRYPTO_SHA256_ARM32_CE),y) 107$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM32_CE) 108endif 109ifeq ($(CFG_CRYPTO_SHA256_ARM64_CE),y) 110$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM64_CE) 111endif 112ifeq ($(CFG_CRYPTO_SHA1_ARM32_CE),y) 113$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA1_ARM32_CE) 114endif 115ifeq ($(CFG_CRYPTO_SHA1_ARM64_CE),y) 116$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA1_ARM64_CE) 117endif 118ifeq ($(CFG_CRYPTO_AES_ARM_CE),y) 119$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_AES_ARM_CE) 120endif 121 122cryp-enable-all-depends = $(call cfg-enable-all-depends,$(strip $(1)),$(foreach v,$(2),CFG_CRYPTO_$(v))) 123$(eval $(call cryp-enable-all-depends,CFG_REE_FS, AES ECB CTR HMAC SHA256 GCM)) 124$(eval $(call cryp-enable-all-depends,CFG_RPMB_FS, AES ECB CTR HMAC SHA256 GCM)) 125 126# Dependency checks: warn and disable some features if dependencies are not met 127 128cryp-dep-one = $(call cfg-depends-one,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2)))) 129cryp-dep-all = $(call cfg-depends-all,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2)))) 130 131$(eval $(call cryp-dep-one, ECB, AES DES)) 132$(eval $(call cryp-dep-one, CBC, AES DES)) 133$(eval $(call cryp-dep-one, CTR, AES)) 134# CTS is implemented with ECB and CBC 135$(eval $(call cryp-dep-all, CTS, AES ECB CBC)) 136$(eval $(call cryp-dep-one, XTS, AES)) 137$(eval $(call cryp-dep-one, HMAC, AES DES)) 138$(eval $(call cryp-dep-one, HMAC, MD5 SHA1 SHA224 SHA256 SHA384 SHA512)) 139$(eval $(call cryp-dep-one, CMAC, AES)) 140$(eval $(call cryp-dep-one, CBC_MAC, AES DES)) 141$(eval $(call cryp-dep-one, CCM, AES)) 142$(eval $(call cryp-dep-one, GCM, AES)) 143# If no AES cipher mode is left, disable AES 144$(eval $(call cryp-dep-one, AES, ECB CBC CTR CTS XTS)) 145# If no DES cipher mode is left, disable DES 146$(eval $(call cryp-dep-one, DES, ECB CBC)) 147# SM2 is Elliptic Curve Cryptography, it uses some generic ECC functions 148$(eval $(call cryp-dep-one, SM2_PKE, ECC)) 149$(eval $(call cryp-dep-one, SM2_DSA, ECC)) 150$(eval $(call cryp-dep-one, SM2_KEP, ECC)) 151 152############################################################### 153# libtomcrypt (LTC) specifics, phase #1 154# LTC is only configured via _CFG_CORE_LTC_ prefixed variables 155# 156# _CFG_CORE_LTC_xxx_DESC means that LTC will only register the 157# descriptor of the algorithm, not provide a 158# crypt_xxx_alloc_ctx() function. 159############################################################### 160 161# If LTC is the cryptolib, pull configuration from CFG_CRYPTO_xxx 162ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt) 163# dsa_make_params() needs all three SHA-2 algorithms. 164# Disable DSA if any is missing. 165$(eval $(call cryp-dep-all, DSA, SHA256 SHA384 SHA512)) 166 167# Assign _CFG_CORE_LTC_xxx based on CFG_CRYPTO_yyy 168core-ltc-vars = AES DES 169core-ltc-vars += ECB CBC CTR CTS XTS 170core-ltc-vars += MD5 SHA1 SHA224 SHA256 SHA384 SHA512 SHA512_256 171core-ltc-vars += HMAC CMAC CBC_MAC 172core-ltc-vars += CCM 173ifeq ($(CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB),y) 174core-ltc-vars += GCM 175endif 176core-ltc-vars += RSA DSA DH ECC 177core-ltc-vars += SIZE_OPTIMIZATION 178core-ltc-vars += SM2_PKE 179core-ltc-vars += SM2_DSA 180core-ltc-vars += SM2_KEP 181# Assigned selected CFG_CRYPTO_xxx as _CFG_CORE_LTC_xxx 182$(foreach v, $(core-ltc-vars), $(eval _CFG_CORE_LTC_$(v) := $(CFG_CRYPTO_$(v)))) 183_CFG_CORE_LTC_MPI := $(CFG_CORE_MBEDTLS_MPI) 184endif 185 186############################################################### 187# mbedtls specifics 188############################################################### 189 190ifeq ($(CFG_CRYPTOLIB_NAME),mbedtls) 191# mbedtls has to be complemented with some algorithms by LTC 192# Specify the algorithms here 193_CFG_CORE_LTC_DSA := $(CFG_CRYPTO_DSA) 194_CFG_CORE_LTC_MPI := $(CFG_CRYPTO_DSA) 195_CFG_CORE_LTC_SHA256_DESC := $(CFG_CRYPTO_DSA) 196_CFG_CORE_LTC_SHA384_DESC := $(CFG_CRYPTO_DSA) 197_CFG_CORE_LTC_SHA512_DESC := $(CFG_CRYPTO_DSA) 198_CFG_CORE_LTC_XTS := $(CFG_CRYPTO_XTS) 199_CFG_CORE_LTC_CCM := $(CFG_CRYPTO_CCM) 200_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, CFG_CRYPTO_XTS CFG_CRYPTO_CCM) 201endif 202 203############################################################### 204# libtomcrypt (LTC) specifics, phase #2 205############################################################### 206 207_CFG_CORE_LTC_SHA256_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA256_DESC \ 208 _CFG_CORE_LTC_SHA224 \ 209 _CFG_CORE_LTC_SHA256) 210_CFG_CORE_LTC_SHA384_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA384_DESC \ 211 _CFG_CORE_LTC_SHA384) 212_CFG_CORE_LTC_SHA512_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA512_DESC \ 213 _CFG_CORE_LTC_SHA512_256 \ 214 _CFG_CORE_LTC_SHA512) 215_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_AES_DESC \ 216 _CFG_CORE_LTC_AES) 217 218# Assign system variables 219_CFG_CORE_LTC_CE := $(CFG_CRYPTO_WITH_CE) 220_CFG_CORE_LTC_VFP := $(CFG_WITH_VFP) 221_CFG_CORE_LTC_BIGNUM_MAX_BITS := $(CFG_CORE_BIGNUM_MAX_BITS) 222_CFG_CORE_LTC_PAGER := $(CFG_WITH_PAGER) 223_CFG_CORE_LTC_OPTEE_THREAD := $(CFG_LTC_OPTEE_THREAD) 224_CFG_CORE_LTC_HWSUPP_PMULL := $(CFG_HWSUPP_PMULL) 225 226# Assign aggregated variables 227ltc-one-enabled = $(call cfg-one-enabled,$(foreach v,$(1),_CFG_CORE_LTC_$(v))) 228_CFG_CORE_LTC_ACIPHER := $(call ltc-one-enabled, RSA DSA DH ECC) 229_CFG_CORE_LTC_AUTHENC := $(and $(filter y,$(_CFG_CORE_LTC_AES_DESC)), \ 230 $(filter y,$(call ltc-one-enabled, CCM GCM))) 231_CFG_CORE_LTC_CIPHER := $(call ltc-one-enabled, AES_DESC DES) 232_CFG_CORE_LTC_HASH := $(call ltc-one-enabled, MD5 SHA1 SHA224 SHA256 SHA384 \ 233 SHA512) 234_CFG_CORE_LTC_MAC := $(call ltc-one-enabled, HMAC CMAC CBC_MAC) 235_CFG_CORE_LTC_CBC := $(call ltc-one-enabled, CBC CBC_MAC) 236_CFG_CORE_LTC_ASN1 := $(call ltc-one-enabled, RSA DSA ECC) 237